fluorescing NORBERGITE - Franklin Quarry, Sussex Co., New Jersey, USA
Yellow SW fluorescing yellow Norbergite, black Graphite, and minor pale-tan colored Fluorophlogopite plates in Calcite.
Measures approximately 3 x 2 x 2 inch, 13.61 oz / 76 x 51 x 51 mm, 386g
Price: 40.00 USD
Item # A0640115 #38
To show the fluorescent response the specimen was illuminated using 6 watt 254nm (Short Wave) / 366nm (Long Wave) UVGL-58 lamp (you need a proper UV light source to observe the fluorescence, more powerful lamp = brighter response).